-ey a-a a-b a-c aaa aab aac aae aah aav aay ab- aba abb abc abe abh abv aby ac- aca acb acc ace ach acv acy aea aeb aec aee aeh aev aey aha ahb ahc ahe ahh ahv ahy av- ava avb avc ave avh avy ay- aya ayc aye ayh baa bab bac bae bah bav bay bba bbb bbc bbe bbh bby bca bcb bcc bce bch bcv bcy be- bea beb bec bee beh bev bey bha bhb bhc bhe bhh bhv bva bvb bvc bve bvh bvv by- bya byc bye byh c-- caa cab cac cae cah cav cay cba cbb cbc cbe cbh cbv cby cca ccb ccc cce cch ccv ce- cea ceb cec cee ceh cev cey ch- cha chb chc che chh chv chy cva cvb cvc cve cvh cvv cya cyb cyc cye eaa eab eac eae eah eav eba ebb ebc ebe ebh ebv eby ec- eca ecb ecc ece ech ecv eea eeb eec eee eev eey eha ehb ehc ehe ehh ehv eva evb evc eve evh evv evy eya eyc eye haa hab hac hae hah hav hay hba hbb hbc hbe hbh hbv hby hca hcb hcc hce hch hcv hcy he- hea heb hec hee heh hev hey hha hhb hhc hhe hhh hhv hhy hv- hva hvb hvc hvv hvy hy- hya hyb hyc hye hyh hyv hyy v-a v-e vaa vab vac vae vah vav vay vba vbc vbh vbv vca vcc vce vch vcy vea veb vec vee veh vey vh- vha vhb vhc vhe vva vvb vvc vvv vye yaa yab yac yae yah yav yay ybc ybe yby yca ycc yce ych ycv ycy yea yeb yec yee yeh yev yey yha yhc yhe yva yve yvy yyb yyc yye yyy